Medulla-oblongata Sentence Examples

Forwards it covers, and has driven asunder, the optic lobes; backwards it hides the much shortened medulla oblongata.

The action of aconitine on the circulation is due to an initial stimulation of the cardio-inhibitory centre in the medulla oblongata (at the root of the vagus nerves), and later to a directly toxic influence on the nerve-ganglia and muscular fibres of the heart itself.

Consciousness is entirely unaffected by physostigmine, there being apparently no action on any part of the brain above the medulla oblongata.

The cerebral convolutions remain unaffected, but the important centres of the medulla oblongata are stimulated.

As the vaso-motor centre in the medulla oblongata is also stimulated, as well as the contractions of the heart, there is thus trebly caused a very great rise in the blood-pressure.

In small therapeutic and in small toxic doses atropine stimulates the motor apparatus of the spinal cord, just as it stimulates the centres in the medulla oblongata.

The action on the circulation is largely secondary, however, to the all-important action of opium on the respiratory centre in the medulla oblongata.

Similarly the depressant action on the respiratory centre in the medulla oblongata occurs only after the administration of enormous doses.

This is mainly due to a direct action on the muscular coats of the vessels, but is also partly of central origin, since the drug also stimulates the vasomotor centre in the medulla oblongata.

Morphine exercises its effects chiefly upon the cerebrum and the medulla oblongata in man.